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2-1. Duty Cycle
CAUTION
WELDING LONGER THAN RATED DUTY CYCLE can damage gun and void warranty.
•
Do not weld at rated load longer than shown below.
M-40: 100% Duty Cycle At 400 Amperes Using CO
*M-40: 100% Duty Cycle At 275 Amperes Using Mixed Gases
Continuous Welding
*M-40AL model has same duty cycle ratings as M-40 models.
3-1. Preparing And Installing Gun
1
OM-1036 Page 2
0
10
Minutes
2
Figure 2-1. Duty Cycle
SECTION 3 – INSTALLATION
Figure 3-1. Installing Gun
Definition
Duty Cycle is percentage of 10
minutes that gun can weld at
rated load without overheating.
M-40: 60% Duty Cycle At 525 Amperes Using CO
*M-40: 60% Duty Cycle At 400 Amperes Using Mixed Gases
6 Minutes Welding
2
3
4
5
wfwarn8.1 8/93
2
4 Minutes Resting
sb1.5* 8/93
1
Drive Assembly Cover
2
Drive Assembly
3
Gun Securing Knob
4
Gun End
Loosen securing knob. Insert gun
end through opening and position
as close as possible to drive rolls
without touching. Tighten knob.
5
Gun Trigger Plug
Insert into matching receptacle and
tighten threaded collar.
Close cover
See wire feeder manual for thread-
ing procedure.
Ref. ST-152 466 / Ref. ST-800 749-A
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